Hull for hydroaeroplanes.



ill

"a Eu llldlllF-E hi ls CARL HOWARD FLHTI', OF NEW ZOE-3K,- l l'.

HULL FOE, HYHIt-UAERQPLANES.

intents specification of Letters Patent.

Patented tilept, 15, lit le,

Application filed May 17, 1913, Serial nereaata Renewed July 24, 1914. Serial Ito. 852,939

and more particularly to a hull for such amphibious crafts. In hydroaeroplanes; as at present constructed it is commonpractice' to construct the body of the machine as a float with floats applied to'the ends of'the wings or lifting planes in order to, 'ive the required stability, or the aerop ane is mounted upon catamaran floats to provide for the lateral balance oi the floating ma- 2U,

chine. These two types of construction are objectionable, especially when traveling in rough water, and furthermore the maneuvering of the machine is diilicult under some conditions.

The general objects of the present invention are to provide a floating hull tor a hydro-aeroplane which is of such a construction that ithas great flotation power, odors comparatively little resistance when traveling in the water, is easy to steer and possesses great stability, and furthermore in flight it has a lifting power of its own. In accomplishing these results the hull is constructed without a central keel but has extending along its bottom adjacent the sides longitudinally extending fins which are suitably spaced apart to form between them a channel, and the top of this channel is formed with a series of forwardly and up wardly inclined planes arranged in stepped relation, whereby considerable buoyancy in the water is obtained, as well as a great lilting power due to the air impinging on the inclined surfaces, the air being confined by the said tins in a manner to maintain a decided lilting efi'ect, this being true both when the craft is traveling in the-water or dying throu h the air.

Wit these ob'ects in view, and others as will appear as t e description proceeds, the invention comprises various novel features of construction and arran "ement of parts which will be more fully escrihed hereinatter and set forth with particularity in claims appended hereto.

bow of the hull, which In t the accompanying drawings, which illustrate one embodiment of the invention, and wherein similar reference characters are employed to designate corresponding parts throughout the several views, Figure l. is a bottom plan view of the hull; Fig. 2 is a longitudinal section thereof; and Fig. 3 is a transverse section on the line 3--3 oil Fig, 2.

Referring to the drawing, 1 designates the is pointed or otherwise shaped to "odor comparatively little air resistance in flight, and the stern 2 is flat on its bottom so as to thereby reduce the submerging effect as the hull is lifted at the bow by the raising efl ect of the air.

vBetween the bow and stern the hull is formed at its sides 6 with longitudinally extending fins 3 which are comparatively nar row and deep so as to provide between them a comparatively wide channel into which the air enters at the front to have a lifting elffect on the hull, the bottom of the hull be tween the fins 3 being formed into a plurality of inclined planes or surfaces 4. Any number of these planes may be employed according to the length of the hull, three being shown in the present instance as illustrating the plural arrangement. The lower ends oi these planes are practically on a common line, and between the lower end of one plane and theupper end of an adjacent plane is a reentrant poclret or chamber 5 whereby the air space under the hull is increased, so as to augment the buoyancy ol the hull when it is in the water. lhe pockets and inclined planes are located wholly above the fins 3, whereby a relatively deep channel is formed under the hull.

As the boat is propelled by its propelling mechanism the. air acting in the channel between the lins 3- and on the planes produces a decided lifting eilect on the hull, while the propelling speed is below a certain point,

and this lifting effect greatly reduces the re 3 sistance uttered by thehull in traversing the water, but as the speed of propulsion is increased and the elevating means or the air cralt adjusted the hydro-aeroplane rises lroni the surface of the water and as an aeroplane, and the air striking on planes l contributes materially in the lilting and sustentation oi' the crait hull con t" t manner described possesses so that lat-ran or till l ll

floats on the main planes are'unnecessary, and furthermore the structure is such that it will withstand shocks in landing. I

From the foregoing description taken in connection with the accompanying drawings,- the advantages of the method of operation and of the structure shown will be readily understood by those skilled in the art to which the invention appertains, and while I have described the structure which I now consider to be the .best embodiment thereof, I desire to have it understood that the structure shown'is merely illustrative, and that such changes may be made when desired as are within the scope of the appended claims.

Havingthus described my invention "I claim as new and desire to secure by Letters Patent:

1. A hull for hydro-aeroplanes comprising a body formed with'longitudinally extending fins at its bottom and a plurality of inclined planes arranged one behind the other and disposed between said fins for producing a lifting effect-in transit through the air and water, there being rentrant pockets betweenthe upper portion of each plane and the lower portion'of the adjacent preceding plane, said fins being located entirely below the pockets.

2. A hull for hydro-aeroplanes comprising abody having a pointed bow, a'flat-stern, fins extending longitudinally of the body at thesidesthereof, and a plurality of inclined name to this specification in the presence of two subscribing witnesses.

CARL HOWARD FLINT.

Witnesses:

HOWARD R. FLINT, G'EoRcn FLINT. 

